So much so, that I ordered pairs for two of his friends. Its now over a month later on 17th of June, and the Logitech software says Im at 24% with 15 hours remaining estimated. She purchased these for work. I installed this to hang up my headphones and it works great. I also purchased the boot one and it held tall boots like the Hunter brands with no problem. I have to try the memory card function ! I ordered the black metal 4 tier shelf. They suit me quite well and work better than expected. Because these are made out of rubber or silicone it is very hard to wipe all of the dust particles off of the pieces. For me, the sound quality comes first.